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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/regulator/mp5416.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/regulator/mp5416.c')
-rw-r--r--drivers/regulator/mp5416.c249
1 files changed, 249 insertions, 0 deletions
diff --git a/drivers/regulator/mp5416.c b/drivers/regulator/mp5416.c
new file mode 100644
index 000000000..82892d71c
--- /dev/null
+++ b/drivers/regulator/mp5416.c
@@ -0,0 +1,249 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// mp5416.c - regulator driver for mps mp5416
+//
+// Copyright 2020 Monolithic Power Systems, Inc
+//
+// Author: Saravanan Sekar <sravanhome@gmail.com>
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+#define MP5416_REG_CTL0 0x00
+#define MP5416_REG_CTL1 0x01
+#define MP5416_REG_CTL2 0x02
+#define MP5416_REG_ILIM 0x03
+#define MP5416_REG_BUCK1 0x04
+#define MP5416_REG_BUCK2 0x05
+#define MP5416_REG_BUCK3 0x06
+#define MP5416_REG_BUCK4 0x07
+#define MP5416_REG_LDO1 0x08
+#define MP5416_REG_LDO2 0x09
+#define MP5416_REG_LDO3 0x0a
+#define MP5416_REG_LDO4 0x0b
+
+#define MP5416_REGULATOR_EN BIT(7)
+#define MP5416_MASK_VSET 0x7f
+#define MP5416_MASK_BUCK1_ILIM 0xc0
+#define MP5416_MASK_BUCK2_ILIM 0x0c
+#define MP5416_MASK_BUCK3_ILIM 0x30
+#define MP5416_MASK_BUCK4_ILIM 0x03
+#define MP5416_MASK_DVS_SLEWRATE 0xc0
+
+/* values in uV */
+#define MP5416_VOLT1_MIN 600000
+#define MP5416_VOLT1_MAX 2187500
+#define MP5416_VOLT1_STEP 12500
+#define MP5416_VOLT2_MIN 800000
+#define MP5416_VOLT2_MAX 3975000
+#define MP5416_VOLT2_STEP 25000
+
+#define MP5416_VOLT1_RANGE \
+ ((MP5416_VOLT1_MAX - MP5416_VOLT1_MIN)/MP5416_VOLT1_STEP + 1)
+#define MP5416_VOLT2_RANGE \
+ ((MP5416_VOLT2_MAX - MP5416_VOLT2_MIN)/MP5416_VOLT2_STEP + 1)
+
+#define MP5416BUCK(_name, _id, _ilim, _dreg, _dval, _vsel) \
+ [MP5416_BUCK ## _id] = { \
+ .id = MP5416_BUCK ## _id, \
+ .name = _name, \
+ .of_match = _name, \
+ .regulators_node = "regulators", \
+ .ops = &mp5416_buck_ops, \
+ .min_uV = MP5416_VOLT ##_vsel## _MIN, \
+ .uV_step = MP5416_VOLT ##_vsel## _STEP, \
+ .n_voltages = MP5416_VOLT ##_vsel## _RANGE, \
+ .curr_table = _ilim, \
+ .n_current_limits = ARRAY_SIZE(_ilim), \
+ .csel_reg = MP5416_REG_ILIM, \
+ .csel_mask = MP5416_MASK_BUCK ## _id ##_ILIM, \
+ .vsel_reg = MP5416_REG_BUCK ## _id, \
+ .vsel_mask = MP5416_MASK_VSET, \
+ .enable_reg = MP5416_REG_BUCK ## _id, \
+ .enable_mask = MP5416_REGULATOR_EN, \
+ .ramp_reg = MP5416_REG_CTL2, \
+ .ramp_mask = MP5416_MASK_DVS_SLEWRATE, \
+ .ramp_delay_table = mp5416_buck_ramp_table, \
+ .n_ramp_values = ARRAY_SIZE(mp5416_buck_ramp_table), \
+ .active_discharge_on = _dval, \
+ .active_discharge_reg = _dreg, \
+ .active_discharge_mask = _dval, \
+ .owner = THIS_MODULE, \
+ }
+
+#define MP5416LDO(_name, _id, _dval) \
+ [MP5416_LDO ## _id] = { \
+ .id = MP5416_LDO ## _id, \
+ .name = _name, \
+ .of_match = _name, \
+ .regulators_node = "regulators", \
+ .ops = &mp5416_ldo_ops, \
+ .min_uV = MP5416_VOLT2_MIN, \
+ .uV_step = MP5416_VOLT2_STEP, \
+ .n_voltages = MP5416_VOLT2_RANGE, \
+ .vsel_reg = MP5416_REG_LDO ##_id, \
+ .vsel_mask = MP5416_MASK_VSET, \
+ .enable_reg = MP5416_REG_LDO ##_id, \
+ .enable_mask = MP5416_REGULATOR_EN, \
+ .active_discharge_on = _dval, \
+ .active_discharge_reg = MP5416_REG_CTL2, \
+ .active_discharge_mask = _dval, \
+ .owner = THIS_MODULE, \
+ }
+
+enum mp5416_regulators {
+ MP5416_BUCK1,
+ MP5416_BUCK2,
+ MP5416_BUCK3,
+ MP5416_BUCK4,
+ MP5416_LDO1,
+ MP5416_LDO2,
+ MP5416_LDO3,
+ MP5416_LDO4,
+ MP5416_MAX_REGULATORS,
+};
+
+static const struct regmap_config mp5416_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x0d,
+};
+
+/* Current limits array (in uA)
+ * ILIM1 & ILIM3
+ */
+static const unsigned int mp5416_I_limits1[] = {
+ 3800000, 4600000, 5600000, 6800000
+};
+
+/* ILIM2 & ILIM4 */
+static const unsigned int mp5416_I_limits2[] = {
+ 2200000, 3200000, 4200000, 5200000
+};
+
+/*
+ * DVS ramp rate BUCK1 to BUCK4
+ * 00: 32mV/us
+ * 01: 16mV/us
+ * 10: 8mV/us
+ * 11: 4mV/us
+ */
+static const unsigned int mp5416_buck_ramp_table[] = {
+ 32000, 16000, 8000, 4000
+};
+
+static const struct regulator_ops mp5416_ldo_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_active_discharge = regulator_set_active_discharge_regmap,
+};
+
+static const struct regulator_ops mp5416_buck_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_active_discharge = regulator_set_active_discharge_regmap,
+ .get_current_limit = regulator_get_current_limit_regmap,
+ .set_current_limit = regulator_set_current_limit_regmap,
+ .set_ramp_delay = regulator_set_ramp_delay_regmap,
+};
+
+static struct regulator_desc mp5416_regulators_desc[MP5416_MAX_REGULATORS] = {
+ MP5416BUCK("buck1", 1, mp5416_I_limits1, MP5416_REG_CTL1, BIT(0), 1),
+ MP5416BUCK("buck2", 2, mp5416_I_limits2, MP5416_REG_CTL1, BIT(1), 2),
+ MP5416BUCK("buck3", 3, mp5416_I_limits1, MP5416_REG_CTL1, BIT(2), 1),
+ MP5416BUCK("buck4", 4, mp5416_I_limits2, MP5416_REG_CTL2, BIT(5), 2),
+ MP5416LDO("ldo1", 1, BIT(4)),
+ MP5416LDO("ldo2", 2, BIT(3)),
+ MP5416LDO("ldo3", 3, BIT(2)),
+ MP5416LDO("ldo4", 4, BIT(1)),
+};
+
+static struct regulator_desc mp5496_regulators_desc[MP5416_MAX_REGULATORS] = {
+ MP5416BUCK("buck1", 1, mp5416_I_limits1, MP5416_REG_CTL1, BIT(0), 1),
+ MP5416BUCK("buck2", 2, mp5416_I_limits2, MP5416_REG_CTL1, BIT(1), 1),
+ MP5416BUCK("buck3", 3, mp5416_I_limits1, MP5416_REG_CTL1, BIT(2), 1),
+ MP5416BUCK("buck4", 4, mp5416_I_limits2, MP5416_REG_CTL2, BIT(5), 1),
+ MP5416LDO("ldo1", 1, BIT(4)),
+ MP5416LDO("ldo2", 2, BIT(3)),
+ MP5416LDO("ldo3", 3, BIT(2)),
+ MP5416LDO("ldo4", 4, BIT(1)),
+};
+
+static int mp5416_i2c_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct regulator_config config = { NULL, };
+ static const struct regulator_desc *desc;
+ struct regulator_dev *rdev;
+ struct regmap *regmap;
+ int i;
+
+ regmap = devm_regmap_init_i2c(client, &mp5416_regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "Failed to allocate regmap!\n");
+ return PTR_ERR(regmap);
+ }
+
+ desc = of_device_get_match_data(dev);
+ if (!desc)
+ return -ENODEV;
+
+ config.dev = dev;
+ config.regmap = regmap;
+
+ for (i = 0; i < MP5416_MAX_REGULATORS; i++) {
+ rdev = devm_regulator_register(dev,
+ &desc[i],
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(dev, "Failed to register regulator!\n");
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static const struct of_device_id mp5416_of_match[] = {
+ { .compatible = "mps,mp5416", .data = &mp5416_regulators_desc },
+ { .compatible = "mps,mp5496", .data = &mp5496_regulators_desc },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mp5416_of_match);
+
+static const struct i2c_device_id mp5416_id[] = {
+ { "mp5416", },
+ { "mp5496", },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, mp5416_id);
+
+static struct i2c_driver mp5416_regulator_driver = {
+ .driver = {
+ .name = "mp5416",
+ .of_match_table = of_match_ptr(mp5416_of_match),
+ },
+ .probe_new = mp5416_i2c_probe,
+ .id_table = mp5416_id,
+};
+module_i2c_driver(mp5416_regulator_driver);
+
+MODULE_AUTHOR("Saravanan Sekar <sravanhome@gmail.com>");
+MODULE_DESCRIPTION("MP5416 PMIC regulator driver");
+MODULE_LICENSE("GPL");